body {
    background-image: url('../beij.jpg');
    background-size: 100% 100%;
    background-attachment: fixed;
}

* {
    padding: 0;
    margin: 0;
}

#tianjia {
    width: 1024px;
    height: 100px;
    margin: auto;
}

.bk {
    background-color: darkred;
    padding: 0;
    margin: 0;
    width: auto;
    height: 150px;
}

.bk img {
    width: 900px;
    height: auto;
    margin: auto;
}

#wtbu {
    margin: auto;
    font-size: 50px;
    text-align: center;
}

#tianjia span {
    font-size: 24px;
    font-weight: bolder;
}

.nicheng {
    width: 1024px;
    display: flex;
    justify-content: space-between;
}

.zd-1,
.zd-2,
.zd-3 {
    width: 500px;
    height: auto;
}

.nicheng span {
    color: white;
    font-size: 36px;
}

#tianjia input {
    width: 200px;
    height: 34px;
    font-size: 24px;
    border-radius: 10px;
}

#ziduan1 {
    font-size: 50px;
    font-weight: bolder;
    width: 900px;
    margin: auto;
    color: white;
}

#sousuolist {
    width: 950px;
    height: auto;
    margin: auto;
    background-color: rgba(216, 214, 214, 0.603);
    border-radius: 8px;
}

#sousuolist button{
    cursor: pointer;
    border-radius: 16px;
    height: 20px;
    width: 50px;
}

#sousuolist div{
    padding-bottom: 5px;
    margin-bottom: 5px;
}

#tianjiabook {
    cursor: pointer;
    border-radius: 16px;
    background-color: rgb(0, 119, 230);
    height: 50px;
    width: 100px;
    float: right;
    color: white;
}

#tianjiabook:hover {
    background-color: rgb(66, 132, 255);
}

#search {
    width: 400px;
    height: 34px;
    font-size: 24px;
    border-radius: 10px;
}

#sousuo {
    font-size: 24px;
    cursor: pointer;
    border-radius: 16px;
    background-color: rgb(0, 119, 230);
    height: 50px;
    width: 100px;
    color: white;
}

#sousuokuang {
    width: 950px;
    height: auto;
    margin: auto;
    float: right;
    line-height: 36px;
}

.ziduan5 {
    display: flex;
    width: 1024px;
    margin: auto;
}

#bianjits{
    display: none;
    position: fixed;
    z-index: 10;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    margin: auto;
    width: 400px;
    height: 220px;
    border: 2px solid black;
    border-radius: 8px;
    margin: auto;
}

#tsxxbj{
    background-color: antiquewhite;
    margin: auto;
    top: 0;
    left: 0;
    font-size: 24px;
    width: 100%;
    height: 100%;
    border-radius: 8px;
    line-height: 40px;
}

#tsxxbj input{
    width: 200px;
    height: 25px;
    border-radius: 7px;
}

#baocun{
    cursor: pointer;
    border-radius: 16px;
    background-color: rgb(0, 119, 230);
    height: 50px;
    width: 80px;
    color: white;
    font-size: 24px;
    right: 0;
}

.bookbox{
    margin-top: 10px;
    margin-bottom: 10px;
    background-color: rgba(197, 197, 197, 0.637);
    border-radius: 8px;
}